As Hopefully mentioned, if you have any interest, you can upgrade your free QS dining plan to the regular DDP. For a 10 night stay for 1 adult, the cost to upgrade would be about $211. If you think you would eat 10 TS, 10 QS and 20 snacks over the course of your trip (instead of 20 QS and 20 snacks), it might be worth it. If you don't want to upgrade, yes, I would do a few TS during your trip. I, personally, would do at least 1 TS per day as I find QS to be a bit chaotic and I like to be able to sit and relax and have table service at least once a day.
Favorites, both resort and in-park (I'm including 1 TS restaurants only, unless you would like some signature recommendations as well):
The Wave (CR)
GF Cafe (GF)
Skipper Canteen (MK)
Spice Road Table (EP)
Trattoria al Forno (BWI)
Captain's Grille (YC)
Kimono's (Swan - not on the DDP, so would have to pay OOP)
blue zoo (Dolphin - not on the DDP, so would have to pay OOP)
Sci-Fi (DHS, more for atmosphere than food!)
Yak & Yeti (AK)
I would also consider some of the lounges, though I do not believe they take DDP. Favorites are Trader Sam's (Poly) and Nomad Lounge (AK).